I'm currently running a 15G AIO with a RO water ATO, and I noticed that my salinity is dropping about 0.001SG every week. I have to add additional salt to mitigate this on a regular basis. My suspicion is the protein skimmer taking tank water along with the skimmate which is subsequently replaced by the RO.
My first thought was to add just a little salt to the ATO Reservoir to passively replace salt, but that got me thinking. Is it feasible to add other things that are dosed on regular intervals to the reservoir and remove the need for manual dosing? Such as Kalkwasser, trace minerals, or whatever else might be stable in such a solution? Would love some feedback from people who tried this.
My first thought was to add just a little salt to the ATO Reservoir to passively replace salt, but that got me thinking. Is it feasible to add other things that are dosed on regular intervals to the reservoir and remove the need for manual dosing? Such as Kalkwasser, trace minerals, or whatever else might be stable in such a solution? Would love some feedback from people who tried this.